WHO(1) | General Commands Manual | WHO(1) |
who
— display who
is logged in
who |
[-abdHlmqrsTtuv ]
[file] |
who |
am i |
The who
utility displays a list of all
users currently logged on, showing for each user the login name, tty name,
the date and time of login, and hostname if not local.
Available options:
-a
-bdlprTtuv
.-b
-d
-H
-l
-m
who
am i.-p
-q
-r
d
(DEATH
)s
(SINGLE_USER
)r
(RUNCOM
)t
(READ_TTYS
)m
(MULTI_USER
)T
(CLEAN_TTYS
)c
(CATATONIA
)-s
-T
-t
-u
-v
-u
, this switch can be used to also printed
process termination signals, process exit status, session id for windowing
and the type of the entry, see documentation of ut_type in
getutxent(3).who
gathers information from the file
/var/run/utmpx. An alternative
file may be specified which is usually
/var/log/wtmpx (or
/var/log/wtmp, or
/var/log/wtmpx.[0-6] or
/var/log/wtmp.[0-6] depending on site policy as
wtmpx can grow quite large and daily versions may
or may not be kept around after compression by
ac(8)). The
wtmpx and wtmp file
contains a record of every login, logout, crash, shutdown and date change
since wtmpx and wtmp were
last truncated or created.If /var/log/wtmpx or /var/log/wtmp are being used as the file, the user name may be empty or one of the special characters '|', '}' and '~'. Logouts produce an output line without any user name. For more information on the special characters, see utmp(5).
The who
utility is expected to conform to
IEEE Std 1003.2-1992 (“POSIX.2”).
A who
utility appeared in
Version 1 AT&T UNIX:
https://www.bell-labs.com/usr/dmr/www/man14.pdf
September 1, 2019 | NetBSD 10.99 |